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Analog Devices Inc./Maxim Integrated MAX4781EUE+
- Part No.:
- MAX4781EUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4781EUE+.pdf
- Description:
- IC MUX 8:1 1OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,192
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Product details
Overview
MAX4781EUE+ from Maxim Integrated is an 8-channel analog multiplexer configured as a single-pole, eight-throw (SP8T) switch with CMOS architecture, operating from +1.6V to +3.6V supply. It delivers 0.7Ω on-resistance at +3V, 0.3Ω channel-to-channel RON matching, and rail-to-rail signal handling for battery-powered audio routing and low-voltage data-acquisition systems.
For engineers reviewing the MAX4781EUE+ datasheet, MAX4781EUE+ pinout, MAX4781EUE+ application, or MAX4781EUE+ equivalent, key selection criteria include its 11ns turn-on time, 16-pin TSSOP package, +1.8V logic compatibility, and pin compatibility with 74HC4051 and MAX4617 - all critical for space-constrained, low-power signal-switching designs.
Technical Context
The MAX4781EUE+ implements a high-speed CMOS analog switch matrix controlled by three binary address inputs (A, B, C) and an active-high ENABLE pin. Its internal architecture supports bidirectional signal flow with break-before-make switching (2ns typical), minimizing transient glitches during channel transitions.
It features integrated ESD protection diodes on all analog I/O pins, enabling robust operation with rail-to-rail input signals up to VCC or GND. The device draws only 1µA quiescent supply current and maintains <0.2Ω RON flatness over the full analog signal range at +3V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.7Ω at +3V supply - ensures minimal signal attenuation and voltage drop in precision analog paths |
| RON Matching | 0.3Ω max between channels - enables accurate gain/phase matching in multi-channel sensor or audio routing |
| Turn-On Time (tON) | 11ns typical - supports high-speed multiplexing in sampling systems up to ~30MHz effective bandwidth |
| Analog Signal Range | Rail-to-rail (0V to VCC) - allows full-scale signal switching without clipping in single-supply systems |
| Logic Compatibility | +1.8V CMOS - interfaces directly with low-voltage microcontrollers and FPGAs without level-shifting |
| Supply Voltage Range | +1.6V to +3.6V - supports operation across Li-ion battery discharge curve (3.6V → 2.7V) and 1.8V/3.3V domains |
| Off-Isolation | -90dB at 1MHz - suppresses crosstalk between inactive channels in sensitive measurement circuits |
Pinout & Package
MAX4781EUE+ is housed in a 16-pin TSSOP package (4.4mm × 5.0mm, 0.65mm pitch) with exposed pad not connected internally. Pin 1 is marked by a dot or beveled corner per JEDEC MO-153.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | X | Analog common output node - connects to load or ADC input; bidirectional signal path |
| 2–4, 11–13 | X0–X7 | Analog inputs - eight independent channels selectable via A/B/C address lines |
| 5 | N.C. | No internal connection - must be left floating or tied to GND; no electrical function |
| 6 | ENABLE | Active-high global enable - drives all switches open when high; low enables address decoding |
| 7 | GND | Ground reference for analog and digital circuitry - requires low-impedance PCB connection |
| 8–10 | A, B, C | 3-bit binary address inputs - select one of eight Xn inputs to connect to X output (LSB = A) |
| 14 | VCC | +1.6V to +3.6V supply - powers analog switch core and digital control logic |
| 15–16 | NC / Exposed Pad | Not electrically connected - pad may be soldered to GND plane for thermal relief only |
Key Features
| Feature | Design Value |
|---|---|
| Low on-resistance flatness | 0.1Ω max variation over full signal range - preserves linearity in precision instrumentation and audio paths |
| High current capability | 150mA continuous per channel - supports driving low-impedance loads like op-amp inputs or transducer interfaces |
| Ultra-low charge injection | -110pC typical - minimizes voltage glitch at output during switching, critical for sample-and-hold accuracy |
| Fast switching with BBM | 2ns break-before-make interval - prevents momentary short-circuits during channel transitions |
| Pin compatibility | Direct replacement for 74HC4051 and MAX4617 - enables drop-in upgrade with no PCB redesign |
Applications
| Battery-Powered Audio Routing | Low-Voltage Data Acquisition |
|---|---|
|
Use Scenario: Switching microphone or headphone signals in portable medical monitors or wireless headsets. IC Role / Device Role / Timing Role: SP8T analog multiplexer selecting between multiple sensors or audio sources under MCU control. Use Value: 0.7Ω RON and rail-to-rail operation preserve SNR and dynamic range across Li-ion battery voltage swing. |
Use Scenario: Multiplexing thermistor, RTD, or strain gauge inputs into a single ADC in handheld test equipment. IC Role / Device Role / Timing Role: Precision analog front-end switch enabling sequential sensor readout with minimal offset error. Use Value: 0.3Ω RON matching and <0.2Ω flatness ensure consistent gain scaling across all 8 channels. |
| Communications Circuit Signal Path | Portable Instrumentation Front End |
|
Use Scenario: Selecting between RF front-end calibration paths or baseband filter banks in IoT modems. IC Role / Device Role / Timing Role: High-isolation analog switch isolating unused signal paths to prevent loading and crosstalk. Use Value: -90dB off-isolation at 1MHz suppresses interference between adjacent RF/IF signal chains. |
Use Scenario: Configuring programmable gain amplifier (PGA) input networks or reference voltage selection in DMMs. IC Role / Device Role / Timing Role: Low-leakage (<50nA off-state) analog switch enabling high-impedance node routing without drift. Use Value: Sub-100nA leakage currents maintain DC accuracy in µV-level measurements over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4617ESE+ | Higher RON (1.5Ω @ +3V), slower tON (25ns), same 16-pin TSSOP footprint | Lower performance in speed- and resistance-sensitive applications; suitable for cost-optimized designs | Select MAX4617ESE+ only if 0.7Ω RON and 11ns switching are not required. |
| 74HC4051D,653 | Wider supply range (2V–10V), higher RON (120Ω @ +4.5V), no 1.8V logic compatibility | Requires level-shifting for 1.8V controllers; unsuitable for sub-2V battery operation | Choose 74HC4051D,653 only in legacy 5V systems where power efficiency and low-voltage operation are secondary. |
Compared with MAX4617ESE+ and 74HC4051D,653, the MAX4781EUE+ provides superior on-resistance, faster switching, and native +1.8V logic support - making it optimal for modern ultra-low-power, high-fidelity analog signal routing where performance and supply flexibility are critical.
Availability
MAX4781EUE+ is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across industrial temperature ranges (-40°C to +85°C).
Supply support for MAX4781EUE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial, communications, and consumer applications.
The MAX4781EUE+ belongs to Maxim's high-speed, low-voltage analog switch family designed specifically for rail-to-rail signal routing in space-constrained, battery-powered systems where low RON, fast switching, and single-supply operation are essential.
FAQ
What is the maximum analog signal voltage range supported by the MAX4781EUE+?
The MAX4781EUE+ supports rail-to-rail analog signals from 0V to VCC. When powered from a +3.0V supply, this means signals from 0V to +3.0V can pass through the switch without clipping or distortion. This capability is enabled by its CMOS process and internal level-shifting design, making MAX4781EUE+ ideal for single-supply systems such as portable instrumentation and battery-powered audio devices.
Does the MAX4781EUE+ require external pull-up or pull-down resistors on its address pins (A, B, C)?
No, the MAX4781EUE+ does not require external pull-up or pull-down resistors on A, B, or C pins. Its digital inputs have CMOS-compatible thresholds (VIH = 1.4V, VIL = 0.5V at +3V supply) and exhibit ≤1µA leakage current, allowing direct interfacing with microcontroller GPIOs. However, for deterministic startup behavior, it is recommended to initialize these pins to known states in firmware before enabling the device.
Can the MAX4781EUE+ be used with a 1.8V supply while maintaining full functionality?
Yes, the MAX4781EUE+ operates fully across +1.6V to +3.6V. At +1.8V, it delivers 1.6Ω typical on-resistance, 30ns max turn-on time, and retains +1.0V logic-high compatibility. All specifications - including leakage, capacitance, and isolation - remain guaranteed over temperature. This makes MAX4781EUE+ uniquely suited for systems powered directly by single-cell Li-ion batteries or 1.8V logic domains.
What is the purpose of the N.C. pin (Pin 5) on the MAX4781EUE+ TSSOP package?
Pin 5 of the MAX4781EUE+ is designated N.C. (No Connection) and is not bonded internally. It must be left unconnected - neither tied to GND nor VCC. While some layouts may connect it to ground for mechanical stability, doing so provides no electrical benefit and risks unintended coupling if routing is non-ideal. The MAX4781EUE+ datasheet explicitly states this pin has no internal function.
How does the ENABLE pin affect switching behavior in the MAX4781EUE+?
The ENABLE pin (Pin 6) is active-high and globally disables all analog paths when driven high. When ENABLE = high, all eight Xn-to-X switches open regardless of A/B/C state - effectively isolating the output. When ENABLE = low, the device responds to A/B/C inputs to route the selected channel. This feature allows hardware-level shutdown independent of address logic, simplifying power sequencing in multi-mux systems using MAX4781EUE+.
MAX4781EUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 1Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 3.6V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 15ns
- -3db Bandwidth:
- -
- Charge Injection:
- -110pC
- Channel Capacitance (CS(off), CD(off)):
- 38pF, 310pF
- Current - Leakage (IS(off)) (Max):
- 2nA
- Crosstalk:
- -80dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX4781EUE+ FAQ
1.How can I place an order for MAX4781EUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4781EUE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4781EUE+ reliable?
The price and inventory of MAX4781EUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4781EUE+ is usually 5 days.
3.What payment methods are accepted for MAX4781EUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4781EUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4781EUE+?
MAX4781EUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4781EUE+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4781EUE+?
For technical support, including MAX4781EUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4781EUE+ requirements.
6.How does Aetrix verify that MAX4781EUE+ is sourced from the original manufacturer or authorized distributors?
All MAX4781EUE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4781EUE+ meets industry standards.
7.What is the process for return or replacement of MAX4781EUE+?
All MAX4781EUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4781EUE+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4781EUE+ part is unused and in its original packaging.
Return procedure for MAX4781EUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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